Published Article / Nuclear Physics JINR-E2-2002-252 nucl-th/0303034


Pion damping width from SU(2) x SU(2) NJL model


Blaschke, David B ; Volkov, M K ; Yudichev, V L

Published in: Phys. At. Nucl.
Year: 2003
Vol.: 66
Page No: 2233-2237
Pages: 13 p
Year: 2003

Abstract: Within the framework of the NJL model, we investigate the modification of the pion damping width in a hot pion gas for temperatures ranging from 0 to 180 MeV. The pion is found to broaden noticeably at T > 60 MeV. Near the chiral phase transition T ~ 180 MeV, the pion width is saturated and amounts to 70 MeV. The main contribution to the width comes from pion-pion collisions. Other contributions are found negligibly small.

Web-Page: http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=nucl-th&id=0303034 ; http://cdsweb.cern.ch/record/609182/files/0303034.pdf ; http://cdsweb.cern.ch/record/609182/files/0303034.ps.gz ; http://www1.jinr.ru/Preprints/2002/252(E2-2002-252).pdf; http://lt-jds.jinr.ru/record/7377/files/252%28E2-2002-252%29.pdf
Language: eng

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